Logging engine



o. A. WIRKKALAY V July' 10, 1923-- LOGGING ENGINE Filed April 21 1921 2 Sheets-Sheet 1 INVENTOR 04cm, 2. Whlkahf ivmuzam,

A TTORNEY.

July 10, 1923 1.461.338 v o. A. WIRKKALA LOGGING ENGINE.

Filed April 21. 1921 2 Shets-Sheet 2 Fig. 8

H v H INVENTOR.

A TTORNEY.

Patented July 10, 1923.

* UNi-T E-D F STATES OSCAR eewmxxnrmor RoMnTownsH-Ir, wnA'rcoM'ooUn-TY, wa's nme'rom- LoGGInG ENGINE.

Application med April 21, mi. Serial-No.1463329 To allcok-omit may concern v Be it known that I, OsoARA. WIRKKAnn, a citizen of the .United ,States, residing-1n Rome Township, in the county of What- 5 com and State of Washington,have invented I a new and useful Lo -ging Engine, of which of logging'overa greater area, whenoperatingthe slack, sky-line system than is possible with other donkeys. Another ob]ect of my improvements is to providera logging donkey having greater drum'speed and more braking power for said d-rumsthan is usual. Another object of my v improvements 18 to provide alogging donkey having its drums in single column relation, thereby-requir ng only a narrow frame which'is convenient for transportation, and also requiring but a single spar tree near the donkeywwhile the two-column machines, require two spar trees.

Another object of my invention is to provide a logging donkey that can log-across canyons with less cable strain than; usual. Another objectof my improvements is to provide va donkey in which the main-line hauling drum is operable attwo speeds by both power shafts used simultaneously. And a further object of my improvementsis to provide a logging donkey which requires fewer, operatives for the logging operations than usual. Additional objectsof my improvements will appear as .the description proceeds; 7 j

I attain these objects withthe mechanism illustrated in the accompanying two sheets of drawings in which Figure 1 is a plan view of a four cylinder, four drum, double,'t wo speed, slack sky-line, steam, logging, donkey engine Fig. 2 is a side elevation of Fig. 1; and Fig. 3 is a sectional view of F ig. 2 on thebent line 3-3 drawn: on-a larger scale. Similar characters refer to [similar I parts throughout. l 7 f Certain parts are broken "away; to show other parts hidden thereby,

. More particu1arly 9;is: the base' fra-me of i a steam, loggi'ng,i'donkeyengine.

10 i a 'ky-lineen'g n'e crankshaft mount;

ed. in. bearings fastened to frame for revo lution.

' ll,- 11 are crank fi z iecil on thev ends of shaft 10 each havingla crank pin set1quarter ing, The engines for operating. shaft 10 are omitted fromthe drawings.

.i 12. is-a pinion mountedfixeduon shaft 10.

13 is a bull,spur gear mounted'fixed on drum shaft l liengagedwith gear 12,1

.14 is a sky-line cable dr m. mounted 100st Yd with. 14 is a drum shaft mounted for revolution inbearings fastened to frameQ. v 1

14:" and14are helical springs on each side of gear 13 mounted on shaft 14 mm against said gearv anddrum 14', and ear. 17

on shaft 14: for revolution thereononthererespectively.

15 is a short steam cylinder mountedfii'ked on the front end (of-shaft 14 to. revolve-therewith. A steam pipe [is connected .toa said cylinder at itsturning center with apacked turning gjoint. Said cylinder a1so =has. a

steam piston reciprocable therein with a .pis-. .ton rod mounted in acentral bore in said drum shaft the inner end of which .bears on frictionkey 15. v This part of theiequipment is known as a steam friction? and will hereinafter be referred-teas steam friction 15. When ,steam enters said -cylinder through said. steam pipe connectedfgthereto said pistonrod is caused to'bear againstsaid friction. key forcing drum 14" rearward on its shaft.

For the purpose of this specificationthe I front side ofthisengine'is thatside shown in Fig. 2, and the front endv is theiend at the right hand in Fig. 2.T I

15*" is awfriction'key mounted in a trans- 16, 16 are two annular, concentric friction blocks mounted fixed on the front face of gear 13, frictionally engageable in two concentric, friction, annular grooves in the rear end of drum 14,

16 an annular friction hlockfixed on the front side face of gear 17, frictionally engageable; withgan; ,annular groove in the rear side face of gear 13.

17 is a spur gear mounted loose on shaft 14?, revolvable thereon or therewith, and, through friction block 16% fricti oiially ena le he ewit "1 183 emf weQmSimile to amoun edfixed 'on'the"i'ear' end'of' sh'aftll ff" withithe inner end of its piston rod bearing on fric- 81 ir ti f ey",inimlfi edff r slight siflivise drem tgina ran rs 5 In shaft 1 1 lofcaiifng "against the rear end "of iHfibLQf'ge f ,i ai f ar i fi 'e on said shaft into frictional engagement with bull spur gear 13 by pressure from steam in 18' ope'iat ing' force said friction eyi beei 'agaiii tg rll t 1 19'is a steam frictionsimilarjto 15;.mounted fixed onthe frontend of shaft 23"Ztore t'olve therewith, its pi'sten'rod" heari'ngon'friction fliey19 19 is" a fr ction ke t "fii i h d r "v'erse slot' in shaft 23 to hear on" the front th rteen.

26 is anannunr friction block fastened to 'therear end of dfum 27,";frictionally en- "gageable with' an annular groove in gear 25.

27 a main-line haulin drum mounted loose" on shaft 27 "for revolution "thereon or there ith. I ,7 27 1s a shaft' nounted 'fo'r' revolution in bearings fastened to frame 9.

28 is a'st'eam friction, similar to 15, mounted fixed on the fronten'do'f shaft 27 the piston rod-bfwh'ichb'ears on friction i 28 is a fricti'o'n'key mtiun'tedjin'al translversei'slot h f 27a toibear 'against" the front'end of thehub of drum 27.

29 is a spur gear mounted fixed on the front end of drum 27 in engagement With gear 20.

30 is a main engine crank shaft mounted for i eiiolution inheariffgs to frame 9. .1 i f 31, 31 are crank discs mounted fixed on the en s. o sha 13 :earlnw h ring iaat pin set quartering. Connecting rods of tWo "steami'e'ngine pistons not shown are connected tocrank discs 31, 31 on said shaft 30.

32 5s a pinion iiiounted fixed on shaft 30 engaged with gear 25. I x H 33 is a inion ounted fixed 'on*shaft30 is an annularrheum tism {seated to the amnesia; Orgasm;eagagame with therear 'end of shaft frietiefiany ea gageable with ear 'si.

cars

r 37 and 37 -are-mammalspnn sneam- 39' "respectivel 40 isthe housing o f-a hand imam-maimed fixed on the rear end ofsh'aft 37,

" 41 isa threaded}'friction pin engaged-in atapp'ed h'olein housing 40mm fmouifted in' a bor'e in" sh'aft 37","its inner end bearing'against friction key 11 fll 'is' a friction pin *mounted'in ashramverse hole through *shaft' f37 and hears against the rear end 'of thehub" of (ii-m sa. 42 is ahand crankfasteneckto the' outer end of friction" pin'41 adapted to' 'rv'tilve the same. I

is a ste'amfcylinder; havingapi-ston, fastenedtoframe 9t 44 is a pistonrodhi'n'ged"to-sa'id"1iston find having its outer end connected tWcfa-nk '45 is a crank fixedj-onirocker shaft' lti.

' 46 is a "rocker shaft "mounted "for weenie "46 is a double crankfixedito shaft fti the ends of which i are -*f'connected""toBrake "band 47. I t

qdricali' part-of 7 and having its outer 57' is adouble crank 47' isafibrakeband mounted on a cylinthe vv-front. end flange of drum 14. a

48 is a steamacylinder, having a piston, fastened to frame-.9.

=9r-is arpiston rod hinged to saidipiston withxitsouter end connected to crank 50. v '50 is a crank fixed'to rocker shaft 51. t

51- is a rocker shaft mounted forrocking in. bearings fastenedtoframe 9.

51 is a double crank fixed having brake :band .52. 7 I

-52 is a brake-band mountedion a cylin drical extensi'onof the front-end flange of drum 27.

'53ris a steam cylinder, having a piston, "fastenedtothe frame 9.

54 is a piston rodhinged to said piston crank 55. v a

L 55 is a crank fixed to rockershaft 56;

- 56 -is arocker shaft mountedier rocking inbearings fastened to frame 9.

ends of'which are connected tothe ends of brakeband 58; we 7 58 is a brake hand-mounted on a cylindrical extension of the. front-end flange of drum-37. v- 59-is a planof the locationroffa steam. b o'iler'on frame 9. w r I have J-beengranted Patent: No. 1,251,157 which pertains to a four cylinder, four drum, single and double, two speed5 slack sky-line, :yarder :and roader; steam, "logging donkey engine. Thereare limitations'of cable capacity; brake service, and convenience of handling; discovered in the:practi'cal use of donkeys-made under saidcpatent which my -.-p-resent invention isintended'to remove InoperationaFor' yarding up hill at slowspeed, bullgear 13 is-cau'sed to engage skyline drum l iygear 17 is loose, ,hrake 4:7 is, ;set, holdingwsaid skywline drum- 'gear 20 is loose,"; gear '25- is caused to engage main-line "drum 27, brake 52 is loose, .haulback drum 37 r 1 "and draw-line drum '39 are loose. Now place 5 "haulback-line drum 37 "under control with :light pressure from brake 58, and cause-en gine shaft 30- to revolve when ;v main-line qdruin 27 is slowly revolved and the logor turn oflogszare 'slowly-yarded up hillwhile u the haulback' drum 'Tslowly pays out its line.

vThis action; continues till said turn is yarded in when p and said; rum-is allowed to slowly pay out' .thesky lineto pe fmit theturnto lielon the ground andfurther to allow suflicient slackin, the fastening gear to permit the same to ear l3.-is released, from drum 14 be disengaged fromj-the logs.'=

To send back the logging gearfor another 1 'turn gear 13 isengaged with drum 14,811- gine shaft 10 iscaused to revolve tillthe hauled in;

end connected. to

fixed to said drum. .c

Touse the power of both "enginesisimuls-w taneous lyfor yarding, the sky line isiheld'by brake 47011 drum 1% "gear 13 is madeloose fixed to shaft 56'the hold said sky line. taut. .Then main-line I I volves drum'37 and quickly carries said logging gear to the, place on the line nearest J the. point; of ,n'extv loading. to shaft51' its ends connected to the ends of" drum 27 is freed from gear25gvand held under lightffriction by brake- 52whilegear vi 3 1; is engaged with drum 37 and engine shaft" 30nis caused 'to revolveKwhich. rapidly retaken up'by drums-14 till one end of the turn i of logs is in theairandthe other end-on the ground, which position of the turn. is main- 14 till'said turn is tained by use ofwdrum F or rapid ya'rding downhill, gear shaft" 30iscause-d toiprevolve thus turning main-line drum 7 27 {at high speed through gears 32, 25,124, 20 to engaged with clutch shaft, 23 "and-engineer 29,,which latter is r fromdrum 14 and enga'ged withagear1-17,

gear '20 is: loose, engine shaft v 10 is caused to revolve and .powertherefrom is deliverd tow drum 27 through gears',12,?13,' 17,'2 j;t ).25

which latter isengaged with drum27. Also, engine shaft "30 is caused to: revolve-[and power. from the sameyissdelivered to drum 27; I a through gear32; to :said gear-25, ,In; thisr-a I I toioperatedrum:27 forheaviest up-hillwork.

To connectyengine shaft 10 to sky-line manner-power from; both enginesis vcaused drum 14,.al0ne, gear 13 is connected toigdrum 14 andgearv17 is made loosefrom gear l3. ;l I

To connect engineshaftg-ldto main-line -drum 27,,alone for slowspeedg-igear 13 is *made -loosefrom'drum 141 and engaged with gear"'17, gear 20-is made -loose from clutch 22, gear 25 is connected t0fdr-11D L27 and gear, a

34- is'inadeloose from drum 37 while for high speed thefsame connections are'm'ade excepting gear 25 is made loose iroin drum" 27 andgear -2O is connected-to clutchf c22.

' T'ouconnectg en ine shaft-:;10 with drum 37,

alone; gear is made loose from drum-l4 and connected iliO' gear 17, gea ,25, is made lo'ose fromrdrum 27, drum 39 .ismade'loose 25 is, madeloose from drum 27 and gear 17 ismade loose from gear 13;;

'from gear 34z 'and said gear-is connected to r 7 v- Y 3'. a a I To vconnect engine shaft-3O with drum 37 alone; drum 39 is made loose from'gear' 34, i said gear is then connected to drum 37 ,Kgear loose from gear 13 and gear 20 is madeloose from' clutch 22; while-to make connections for high speed thesame connections are made-excepting gear-25 is made loose from drum 27 and "gear 20 is connected to clutch22. And finally, to drivedrum let, alone from engine shaft 30, drums 39 and 37. are made loose from gear 3a, gear 25 is-made loose from drum 2'7, gear 17 and drum-14L are connected to gear 13, steam is shut off from the engine connected to shaft 10 and the exhaust cocks -'of said engine are opened, permitting the pistons of said engine freedom of movement in their cylinders, which will allow engine shaft 10 to'be turned without resistance.

In sky-lineloggingthe logs are best carried with one end in the air and the other end: trailing on the-ground. This position of the logs prevents their beingfheld up by engaging with stumps or 'other logs and yet places only onhalf therweight on the sky line that -it'must hear when said logs I floor, across thesameand up the other bank.

Since all of the separable power connections on my logging I- donkey are 'fllCtlOn clutches, it followsithat changes of power connections can be made during operation of the machine under load.

The ability to operate drum'27 at either Attention is also further directed to the importance of having two independent power uni-ts, either or bothl'of which are: {made directly applicable to each of; the

drums during operations. Thispower subdivision is made of increased utility by hav- "ing each unit able to conduct ordinary operaabilityof one power unit, 'workxcan proceed What I claim as new and desire to tions alone. Then in the event'rof the disnation, a donkey engine frame, threecable drums mounted in column on parallel shaftsfor rotationj on said frame, two prime-mover i shafts mounted parallel with said -':drumshafts for revolution on said frame, separately controllable power connections between each ofsaid prime-mover shafts and each of said drums adapted to transmit power of rotation from either of said primemover shafts to each of said drums without connection with either of the other of saiddrums, and separately controllable means to ,"operate each of said prime-mover shafts.

mounted in column for revolution on parallel said drum: shafts and betweendsaid ,rearshafts onmsaidwframe, twoljengine shafts mounted for revolution on said framepairallei withsaidvdrum shafts, a fourth hauling drum mounted for revolution, ion one-of :said drum shafts, controllable driving connections between each ofisaid engine: shafts and 185 each of said three drums adaptedlito transmit power of rotation from; ,either ofcsaid engine shafts toeach of said; three drums separately separately controllable; means, to rotate each of said engine s'hafts and con-i390 trollable means to. connect said gfour'th drum to the shaft on which it is mou'ntedformotation therewith. H I

4. :In a logging donkey,engineinicombina- I tion, a donkey engine frame; threeinparallelegs dflblE-(ll'llll'l shafts mounted for revolution in hearings on said frame; three, looseecable drums in column relation, onemionntedi for JlGVOlllfilOIl -oneach of saidmdrum; shafts; of two speeds is important-for rapid work. c

three separately controllable: and actuated e brakes one applicable to: each: ofssaidqdnums I tween the frontwandj middle l ones, ofi isaid drums; a'coun'ter'shaft mounted for resolution in bearings on said frame parallel-With and middle drums;'-three fixed spur..-gears, one-mounted oneach :ofgsaid drumishafts and frictionally 'eng-ageablewith saiddrum fixed spur gear and saidirframegumeans "adapted toengage said loose gear with said fixed gear; a fixed: spur gear monntedon said countershaftengaged with. sai'dvloose gBiIP-OILSEIICI rear drum shaft and. also engaged with said finelclgearzon rsaid -middle drum shaft; a fixed gear on .saidi'rear 'prime mover shaft engaged with 1 said fixed gear on said rear drum 'shaft'; ansmallefhfixed gear on said front prime-mover-shaft engaged with said fixed gear on said middle drum shaft; a largerfixed gear on said front prime-mover shaft engaged with said 130 fixed gear on said front drum shaft;

fixed friction clutch on said counter shaft; a loose spur gear mounted for revolution on said countershaft frictionally engageable with said friction clutch thereon and engaged with said gear fastened on said middle drum; separately controllable power means adapted to friction-ally engage'each of said fixed gears on each of said drum shafts with the said drum thereon; controllable power means adapted to friction. ally engage said countershaft clutchwith said loose gear on said countershaft, and controllable power means adapted to re volve said prime-movershafts separately or jointly, whereby power from either of said power shafts is transmitted to revolve either of two of said drums at one speed for each and said other drum t either of two speeds or the power from both of said power shafts is simultaneously caused to revolve either of two of said drums at one speed for each and said other drum at either of two speeds while the other drums are under said brake control, and further whereby said transmission of power is divertable from one of said drums to another during operations.

5. In a logging donkey engine in combination, a donkey engine frame; three cable drums mounted in column on parallel shafts for rotation on said frame; another cable drum mounted for rotation on oneof said shafts; two prime-mover shafts mounted parallel with said drum shafts for revolution on said frame; separately controllable power connections between each of said, prime-mover shafts and each of said drums adapted to transmit power of rotationfrom either of said prime-mover shafts to each of said drums without" connection with either of the other of said drums and separate means to operate each of said primemover shafts.

6. In a logging donkey engine in combination, a donkey engine frame three parallel cable drum shafts mounted for rotation in hearings on said frame; three cable drums in column each mounted for rotation on one of said shafts; three separately actuated and controllable brakes, one applicable to each of said drums, whereby the revolutions ofsaid drums are reduced or stopped; I a countersha-ft mounted-in bearings on said frame for revolution parallel with said i x drum shafts; two separately actuated and controllable power shafts mounted in bearings on saidyframeparallel with said drum shafts for revolution; separately control lable power connections, exclusive ofsaid countershaft, between each of Sa ldLpOWGI shafts and each of said drums adapted to transmit power of'rotation from either ofsaid power shafts separately or both simultaneously to each of'said drums separately whereby'said drums are caused to revolve at one speed for: each, and through said both simultane- 7. Ina logging donkey engine "in conribination, a donkey engine frame; three parallel cable drum shafts mounted for revolution, in bearing -on sald gframe; three cable drums in column eachmounted for revolu-.

tion on one of said shafts; three separately actuated and controllable brakes, one applicable to each of said drums, whereby the revolutions of said drums are reduced {or stopped; countershaft -moi 1nted in bearings on said frame for revolutionxparallel with said drum shafts; a power" shaft mounted in bearings on said frame for revos lution parallel. with said drum shafts; cona trollable power connections, exclusive of said countershaft, between said power shaft and each of said drums adapted totransmit power of rotation from said power shaft to each of said drums separately whereby said drums are caused to revolve at one speed for each, and through said countershaft whereby onev of said drums is caused to revolve at another speed, while said other drums are held under control of said brakes;

and controllable power means adaptedto revolve said power shaft. COSGAR A. WIRKKALA. 

